How long does rickets usually take to get better after calcium supplementation cannot be generalized as the duration of treatment will vary from patient to patient. It is not possible to generalize. Patients with rickets should actively cooperate with the treatment according to the doctor’s advice to control the development of the disease and prevent deformities of the bones. To treat rickets, it is important to supplement enough vitamin D to promote the absorption of calcium and phosphorus by the bones, which can prevent the disease from worsening. Since each child’s condition is different, the treatment time and drug dosage, very much emphasize individualization, so it is difficult to have a clear uniform recovery time. Moreover, after vitamin D supplementation, some children who have already suffered from bone deformities may find it difficult to recover from the disease, and may require manipulative massage, splinting or even surgical treatment at a later stage. Supplementation of vitamin D also actively strengthen the physical exercise, at the same time, in the diet should pay attention to meat and vegetables, strengthen nutrition. For children with rickets need to consult a doctor in time, under the guidance of the doctor systematic treatment.